Document usage with datasette-scale-to-zero

[simonw]

Following #29 I decided to try this:

datasette publish fly \
   fixtures.db \
   --app datasette-publish-fly-issue-29 \
   --install datasette-auth-passwords \
   --plugin-secret datasette-auth-passwords root_password_hash 'pbkdf2_sha256$480000$9ce99372d1fa079f770d4e2245bcf335$zJjskTDc6M8sxmEUYZBr/EC0e730Q9pzcF8RJB43c/c=' \
   --install datasette-scale-to-zero \
   --plugin-secret datasette-scale-to-zero duration 5m

Using https://datasette.io/plugins/datasette-scale-to-zero ... and it worked!

I watched the Fly Dashboard and the app at https://datasette-publish-fly-issue-29.fly.dev/ now successfully scales to zero if it receives no hits for 5 minutes, then starts running again when traffic arrives:

Here's it exiting 5m after the last request:

And here's it rebooting when a new request comes in:

[simonw]

I'm inclined to add this as a feature - maybe datasette publish fly ... --scale-to-zero 5m.

Or --sleep-after 5m perhaps?

[simonw]

As observed here:

• Where else have you seen this application level scale to zero pattern in use ? Is there a catchy name for it? datasette-scale-to-zero#4 (comment)

Fly also call this "wake on request".